4-QAM - What does 4-QAM stand for? The Free Dictionary
References in periodicals archive
The symbol here represents 4-QAM
modulated data and has 2 bits.
Quadrature Amplitude Modulation (QAM): This modulation method for cable broadcast reception is classified into technologies ranging from 4-QAM
to 256-QAM, depending on the volume of data being transmitted.
It features 4-QAM
(quadrature amplitude modulation) for spectrum efficiency and conforms to all relevant FCC standards.